User Manual

Setup Problems

If you are having problems after running through all of the setup steps above, you may find the following information

useful:

I can get my device in DFU mode (fast blinky on the red LED), but the two USB CDC (COM) ports never enumerate. I

have the USB drivers installed, though. What's wrong?

On Windows, you can check if the device is enumerating properly with the following free

tool: http://www.nirsoft.net/utils/usb_devices_view.html

If everything is working correctly, and the WICED Feather is plugged in and enumerating properly, the 'Adafruit

Industries' devices will be highlighted in green:

If your board isn't connected, the Adafruit Industries devices options above should still appear in gray, which means

that the drivers are at least installed correctly.

If you can only get your board to work in DFU mode (either every time it starts up, or by forcing DFU mode by setting

the DFU pin to GND and resetting), you probably need to reflash FeatherLib as well as a valid sketch, which is

described in this FAQ (https://adafru.it/w4A). However, you can also update FeatherLib directly from the Arduino IDE as

follows:

Set the DFU pin to GND on your WICED Feather

Reset the device with DFU connected to GND, which will force it to enter USB DFU mode, and you should see a

fast blinky pattern on the RED LED, indicating that you are in DFU mode.

Disconnect the DFU pin from GND.

With Adafruit WICED Feather selected as the Board Target, changed the section to Feather Lib (Release).

Now compile any simple sketch, and flash it to the device. This will compile the sketch, but Feather Lib will

actually be flashed, not the sketch you just compiled.

Once the flashing process is done, change the section back to User Code and then flash your sketch again,

which will now flash a simple sketch. A blinky example is best since you can see the results.

When you reset your device, you should now have an updated FeatherLib as well as a valid user sketch, meaning

that the two USB CDC ports can enumerate, since a valid code entry point has been found in the valid user

sketch.

If you continue to have problems, please post to the Adafruit Support Forum (https://adafru.it/dYq) with the following

information:

A screenshot from the USB Device View tool showing the Adafruit Industries entries if present (to validate driver

installation)

Indicate whether you can successfully enter DFU mode by connected the DFU pin to GND and resetting.

The results of running the dfu-util -l command with the WICED Feather connected, which will let us know if the

USB DFU device was detected